Факультет архітектури, будівництва та енергетики
Постійне посилання на фондhttps://repository.lntu.edu.ua/handle/123456789/45
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Item type:Наукова стаття, Tools and Criteria for Regional Environmental and Geological Monitoring of Open-Pit Mines (Case Of Volyn Polissya, Nw Ukraine)(2022) Vereshko, Oleh; Uzhehov, Serhii; Uzhehov, Serhii; Uzhehov, SerhiiThe article provides a comprehensive analysis of the potential environmental impact of open-pit mining of certain deposits of construction raw materials (on the example of the plain region of Volyn Polissya). Official project data on locations, areas and volumes of extraction are taken into account. The availability of tools and services for independent verification of mining development based on the analysis of remote sensing data is described separately. Examples of such analysis are given. A number of criteria for assessing the environmental impact of such developments on the geological environment are proposed, including the area and depth of development, production volumes, the presence or absence of groundwater disclosure and factors of their pollution, distances to the nearest vulnerable objects, etc. Based on this, a scoring scale was developed and applied to assess the relative risk of negative impact of mines on the environment in this region.Item type:Наукова стаття, Study of wood deformation indicators after exposure to acidic environments(2026) Vereshko, Oleg; Boyarska, Inna; Uzhegova, Olga; Shevchuk, Pavlo; Uzhehov, Serhii; Homon, Sviatoslav; Gomon, Svyatoslav; Gomon, PetroExperimental studies were conducted on the deformation indicators of structural birch and pine wood under the influence of various acidic environments with different impregnation times. The deformation parameters of all studied wood species were determined experimentally, in particular the critical uc,0,d,agr and residual deformations uc,fin,agr. It has been established that exposure to an acidic environment increases the deformation characteristics of structural timber.. Specifically, the relative critical deformations of the studied species increased within the range of 1.12 to 1.17 times after 28 days of impregnation compared to the samples tested at the standard moisture content of 12%, and within the range of 1.14 to 1.19 times after 180 days. Residual deformations increased 1.1 to 1.25 times after 28 days of impregnation, and after 180 days, they remained practically the same. Over the following five months, the strength and deformability characteristics changed insignificantly, they stabilized. This is explained by the fact that after 28 days of impregnation, the wood is almost completely saturated with moisture and subsequently hardly absorbs any more.Item type:Наукова стаття, The influence of repeated low-cycle loads on the stress-strain state of steel-reinforced concrete drainage gutters(2026) Andriichuk, Oleksandr; Yasiuk, Ivan; Uzhegova, Olga; Uzhehov, SerhiiThe paper presents the results of experimental studies on the effect of repeated low-cycle loading on the stress–strain state of steel fiber reinforced concrete gutters. A comparison was made between the effects of single and repeated loadings. Overall, the findings demonstrate that steel fiber reinforced concrete gutters have higher resistance to cyclic loading compared to single loading, and they better withstand repeated impacts without significant material failure.